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Windows: Only update boot configuration on disk if the user actually changed something in the UI

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This commit is contained in:
Mounir IDRASSI 2019-10-27 02:00:07 +02:00
parent 2722b46530
commit b1b692d4a3
No known key found for this signature in database
GPG Key ID: 02C30AE90FAE4A6F
1 changed files with 29 additions and 25 deletions
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54
src/Mount/Mount.c
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@ -11599,6 +11599,8 @@ static BOOL CALLBACK BootLoaderPreferencesDlgProc (HWND hwndDlg, UINT msg, WPARA
{ {
WORD lw = LOWORD (wParam); WORD lw = LOWORD (wParam);
static std::string platforminfo; static std::string platforminfo;
static byte currentUserConfig;
static string currentCustomUserMessage;
switch (msg) switch (msg)
{ {
@ -11640,6 +11642,10 @@ static BOOL CALLBACK BootLoaderPreferencesDlgProc (HWND hwndDlg, UINT msg, WPARA
return 1; return 1;
} }
// we store current configuration in order to be able to detect if user changed it or not after clicking OK
currentUserConfig = userConfig;
currentCustomUserMessage = customUserMessage;
if (bootLoaderVersion != VERSION_NUM) if (bootLoaderVersion != VERSION_NUM)
Warning ("BOOT_LOADER_VERSION_INCORRECT_PREFERENCES", hwndDlg); Warning ("BOOT_LOADER_VERSION_INCORRECT_PREFERENCES", hwndDlg);
@ -11709,11 +11715,16 @@ static BOOL CALLBACK BootLoaderPreferencesDlgProc (HWND hwndDlg, UINT msg, WPARA
{ {
try try
{ {
std::string dcsprop = ReadESPFile (L"\\EFI\\VeraCrypt\\DcsProp", true); std::string currentDcsprop = ReadESPFile (L"\\EFI\\VeraCrypt\\DcsProp", true);
std::string dcsprop = currentDcsprop;
while (TextEditDialogBox(FALSE, hwndDlg, GetString ("BOOT_LOADER_CONFIGURATION_FILE"), dcsprop) == IDOK) while (TextEditDialogBox(FALSE, hwndDlg, GetString ("BOOT_LOADER_CONFIGURATION_FILE"), dcsprop) == IDOK)
{ {
if (validateDcsPropXml (dcsprop.c_str())) if (dcsprop == currentDcsprop)
{
break;
}
else if (validateDcsPropXml (dcsprop.c_str()))
{ {
WriteESPFile (L"\\EFI\\VeraCrypt\\DcsProp", (LPBYTE) dcsprop.c_str(), (DWORD) dcsprop.size(), true); WriteESPFile (L"\\EFI\\VeraCrypt\\DcsProp", (LPBYTE) dcsprop.c_str(), (DWORD) dcsprop.size(), true);
break; break;
@ -11753,17 +11764,7 @@ static BOOL CALLBACK BootLoaderPreferencesDlgProc (HWND hwndDlg, UINT msg, WPARA
if (!bSystemIsGPT) if (!bSystemIsGPT)
GetDlgItemTextA (hwndDlg, IDC_CUSTOM_BOOT_LOADER_MESSAGE, customUserMessage, sizeof (customUserMessage)); GetDlgItemTextA (hwndDlg, IDC_CUSTOM_BOOT_LOADER_MESSAGE, customUserMessage, sizeof (customUserMessage));
byte userConfig; byte userConfig = currentUserConfig;
try
{
if (!BootEncObj->ReadBootSectorConfig (nullptr, 0, &userConfig))
return 1;
}
catch (Exception &e)
{
e.Show (hwndDlg);
return 1;
}
if (IsDlgButtonChecked (hwndDlg, IDC_DISABLE_BOOT_LOADER_PIM_PROMPT)) if (IsDlgButtonChecked (hwndDlg, IDC_DISABLE_BOOT_LOADER_PIM_PROMPT))
userConfig |= TC_BOOT_USER_CFG_FLAG_DISABLE_PIM; userConfig |= TC_BOOT_USER_CFG_FLAG_DISABLE_PIM;
@ -11772,22 +11773,22 @@ static BOOL CALLBACK BootLoaderPreferencesDlgProc (HWND hwndDlg, UINT msg, WPARA
if (bSystemIsGPT) if (bSystemIsGPT)
{ {
if (IsDlgButtonChecked (hwndDlg, IDC_DISABLE_BOOT_LOADER_HASH_PROMPT)) if (IsDlgButtonChecked (hwndDlg, IDC_DISABLE_BOOT_LOADER_HASH_PROMPT))
userConfig |= TC_BOOT_USER_CFG_FLAG_STORE_HASH; userConfig |= TC_BOOT_USER_CFG_FLAG_STORE_HASH;
else else
userConfig &= ~TC_BOOT_USER_CFG_FLAG_STORE_HASH; userConfig &= ~TC_BOOT_USER_CFG_FLAG_STORE_HASH;
} }
else else
{ {
if (IsDlgButtonChecked (hwndDlg, IDC_DISABLE_BOOT_LOADER_OUTPUT)) if (IsDlgButtonChecked (hwndDlg, IDC_DISABLE_BOOT_LOADER_OUTPUT))
userConfig |= TC_BOOT_USER_CFG_FLAG_SILENT_MODE; userConfig |= TC_BOOT_USER_CFG_FLAG_SILENT_MODE;
else else
userConfig &= ~TC_BOOT_USER_CFG_FLAG_SILENT_MODE; userConfig &= ~TC_BOOT_USER_CFG_FLAG_SILENT_MODE;
if (!IsDlgButtonChecked (hwndDlg, IDC_ALLOW_ESC_PBA_BYPASS)) if (!IsDlgButtonChecked (hwndDlg, IDC_ALLOW_ESC_PBA_BYPASS))
userConfig |= TC_BOOT_USER_CFG_FLAG_DISABLE_ESC; userConfig |= TC_BOOT_USER_CFG_FLAG_DISABLE_ESC;
else else
userConfig &= ~TC_BOOT_USER_CFG_FLAG_DISABLE_ESC; userConfig &= ~TC_BOOT_USER_CFG_FLAG_DISABLE_ESC;
} }
try try
@ -11807,7 +11808,10 @@ static BOOL CALLBACK BootLoaderPreferencesDlgProc (HWND hwndDlg, UINT msg, WPARA
return 1; return 1;
} }
BootEncObj->WriteBootSectorUserConfig (userConfig, customUserMessage, prop.volumePim, prop.pkcs5); // only write boot configuration if something changed
if ((userConfig != currentUserConfig) || (!bSystemIsGPT && (customUserMessage != currentCustomUserMessage)))
BootEncObj->WriteBootSectorUserConfig (userConfig, customUserMessage, prop.volumePim, prop.pkcs5);
SetDriverConfigurationFlag (TC_DRIVER_CONFIG_CACHE_BOOT_PASSWORD, bPasswordCacheEnabled); SetDriverConfigurationFlag (TC_DRIVER_CONFIG_CACHE_BOOT_PASSWORD, bPasswordCacheEnabled);
SetDriverConfigurationFlag (TC_DRIVER_CONFIG_CACHE_BOOT_PIM, (bPasswordCacheEnabled && bPimCacheEnabled)? TRUE : FALSE); SetDriverConfigurationFlag (TC_DRIVER_CONFIG_CACHE_BOOT_PIM, (bPasswordCacheEnabled && bPimCacheEnabled)? TRUE : FALSE);
SetDriverConfigurationFlag (TC_DRIVER_CONFIG_DISABLE_EVIL_MAID_ATTACK_DETECTION, IsDlgButtonChecked (hwndDlg, IDC_DISABLE_EVIL_MAID_ATTACK_DETECTION)); SetDriverConfigurationFlag (TC_DRIVER_CONFIG_DISABLE_EVIL_MAID_ATTACK_DETECTION, IsDlgButtonChecked (hwndDlg, IDC_DISABLE_EVIL_MAID_ATTACK_DETECTION));